#include <stdio.h>
#include <string.h>
#include <unistd.h>
int main()
{
  printf("hello printf\n");
  fprintf(stdout,"hello fprintf\n");
  fputs("hello fputs\n",stdout);

  const char* wstr="hello write\n";
  write(1,wstr,strlen(wstr));
  fork();
  return 0;
}
